off birth control, late period

I started the pill on the day of my period (sep. 22) and I felt like I was depressed so I stopped after 2 weeks and a half. The next three days I had light spotting (no blood clots) and I now have white discharge, like I do when I ovulate. I'm 6 days late on my period. When having sex we use condoms or withdrawal. Could I be pregnant? Or did my cycle get messed up?